Å·±¦ÓéÀÖ

“Snow managed to build his mastery of this embryonic field almost entirely through research conducted in his own home. He maintained a small menagerie in his Frith Street quarters â€� birds, frogs, mice, fish â€� where he spent countless hours watching the creatures' response to various dosages of ether and chloroform. He also used his medical practice as a source of experimental data, but was not above using himself as a test subject. There is something wonderful â€� and more than a little ironic â€� in this image of Snow the teetotaler, arguably the finest medical mind of his generation, performing his research. He sits alone in his cluttered flat, frogs croaking around him, illuminated only by candlelight. After a few minutes tinkering with his latest experimental inhaler, he fastens the mouthpiece over his face and releases the gas. Within seconds, his head hits the desk. Then, minutes later, he wakes, consults his watch through blurred vision. He reaches for his pen, and starts recording the data.”
― Steven Johnson, The Ghost Map: The Story of London's Most Terrifying Epidemic—and How It Changed Science, Cities, and the Modern World